That's not evolution that you're describing, as we're not different species just different colors lol!
Evolution though explains things up to this point and it will describe lots in the future, but humans shape their world way more and way quicker than evolution does. If you mean evolution of humans it will totally depend on the kind of environment we set for ourselves in 500 years (which isn't any time at all in evolutionary terms) we could very well have half of our population on mars or in space, and evolution there will come from our bodies adapting to that. On the other hand if trends with global warming continue our bodies will have adapted to live in a warmer climate.
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